There is no fixed winner, which is why any universal number should make you sceptical. YouTube tends to reward depth, consideration and long shelf life, while Instagram rewards speed, visual discovery and frequency. The higher-ROI platform is the one where your audience and content type actually fit, measured against your own goal.
Which platform yields a higher ROI for influencer marketing, YouTube or Instagram?
Asking which platform wins on ROI has no honest universal answer, which is why any confident single figure deserves suspicion. The two platforms simply earn their return differently. YouTube favours depth and consideration: longer videos build trust, demonstrate products properly and keep working for months as evergreen search results, which suits higher-value or complex purchases. Instagram favours immediacy and visual appeal: Reels and Stories drive fast reach, discovery and frequency, which suits impulse, lifestyle and visually led products. So the higher-ROI platform is entirely conditional on where your target audience actually spends time, what your product needs to communicate and which metric defines success for you. I will not invent comparative numbers, because real ROI depends on your specific campaign and attribution. Flinque's role is the same on either platform: it helps you find and vet genuinely engaged creators on both YouTube and Instagram, meaning whichever you choose, the front-of-funnel inputs are real and the ROI question starts from a trustworthy base.